//
//  Dog.h
//  08-iOS9新特性及类的扩展
//
//  Created by LL.F on 16/7/13.
//  Copyright © 2016年 LL.F. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Dog<__covariant ObjectType> : NSObject
@property (nonatomic, strong) ObjectType gender;
- (void)addObject:(ObjectType)object;
- (ObjectType)anyObject;
- (__kindof NSDictionary *)returnDictionary;
@end
